Seat cushion



FIG. 1 is a perspective view taken from the top, front and left side of a seat cushion showing the design;

FIG. 2 is a left side elevation of the seat cushion of FIG. 1;

FIG. 3 is a top plan view of the seat cushion of FIG. 1;

FIG. 4 is a rear elevation of the seat cushion of FIG. 1; and,

FIG. 5 is a perspective view taken from the top, rear and right side of the seat cushion of FIG. 1.

The right side elevation of the seat cushion of FIG. 1 is a mirror image of the left side elevation of the seat cushion of FIG. 1.

The bottom of the seat cushion of FIG. 1 is flat and devoid of surface ornamentation.

The design relates to a cushion for a postural correction seat. 

The ornamental design for a seat cushion, as shown and described. 